27828 results about "Hot pressing" patented technology

A master mould is made by wire cutting a plate in two or more directions to provide a base with an array of master mould needles protruding therefrom. The size and shape of the master mould needles can readily be varied by varying the angles of upward and downward cuts in the two or more directions. The master mould is used to make a secondary mould by hot embossing a secondary mould plate onto the master mould. This forms through-holes in the secondary mould. The secondary mould is plated with a layer of metal, which forms a microneedle array.

Improved microelectromechanical systems (MEMS), processes and apparatus using thermocompression bonding are disclosed. For example, process embodiments are disclosed in which wafer-scale as well as die-scale thermocompression bonding is utilized to encapsulate MEMS and / or to provide electrical interconnections with MEMS. Apparatus embodiments include apparatus for performing thermocompression bonding and bonded hybrid structures manufactured in accordance with the process embodiments. Devices having various substrate bonding and / or sealing configurations variously offer the advantage of reduced size, higher manufacturing yields, reduced costs, improved reliability, improved compatibility with existing semiconductor manufacturing process and / or greater versatility of applications.

Ionomeric polymer sensors, actuators, and transducers and methods for fabricating them are disclosed. One embodiment of the sensors, actuators, and transducers possess a high surface area electrode layer that is applied by hot pressing and a highly conductive surface layer. Another embodiment of these sensors, actuators, and transducers possess a high surface area electrode layer that is penetrated by electronically conductive nanowires. Methods for fabricating these sensors, actuators, and transducers are disclosed. These methods involve the formation of the high surface area layer from a liquid mixture that contains ionomeric polymer, electronically conductive particles, and possibly diluent. This mixture is formed into layers either directly on an ionomeric polymer, on a separate transfer decal, or on an electronically conductive layer. This electronically conductive layer may also include an array of nanowires. These electrode layers are then attached to an ionomeric polymer membrane by hot pressing. The ionomeric polymer membrane may be swollen with a diluent either prior to the hot pressing or after the hot pressing step. Also, the ionomeric polymer membrane may be formed by casting from a liquid mixture containing ionomeric polymer and diluent.

Lithium disilicate based glass-ceramics contain high strength ceramic components for use in the manufacture of dental products. The glass-ceramics have good pressability, i.e., the ability to be formed into dental products by heat-pressing using commercially available equipment. The strength of the dental articles is increased with the inclusion of the high strength ceramic components.

Provided is a vacuum heat insulating material, using inorganic fibers as a core material, high in heat insulating performance (low in thermal conductivity), capable of maintaining the heat insulating performance for a long period, free of defects such as projections and depressions on a large scale on a surface thereof, short in manufacturing time and advantageous in terms of cost; and a manufacturing method therefor. A vacuum heat insulating material of the present invention is of a construction in which a core material 1 and a gas adsorbent 2 are housed in a bag 3 made from a gas barrier film and the interior thereof is reduced in internal pressure thereof and air-tightly sealed, wherein the core material 1 is a molded product obtained by coating a binder B on inorganic fibers having an average fiber diameter in the range of from 3 to 5 mum at a coating amount in the range of from 0.5 to 1.5 wt % relative to the fibers and heat pressing the inorganic fibers, or a laminate fabricated by stacking two or more sheets of the molded product.

The invention provides a method for preparing a graphene-carbon nano tube hybrid composite and relates to a method for preparing a functional high molecular material and a device thereof. The method comprises the following steps of: carrying out the stirring and sonic oscillation treatment on graphene and carbon nano tubes to preform an entangled network structure, thoroughly mixing the entangled network structure and polymer particles, and thus obtaining an uniformly-mixed system in which the graphene-carbon nano tube network is coated on the surfaces of the polymer particles after removing the solvent; and putting the uniformly-mixed system in a mould, hot-compacting, and obtaining the graphene-carbon nano tube hybrid composite after cooling and demoulding. By mingling the graphene and the carbon nano tubes in advance to form the communicated network structure, the method realizes the advantage complementation of the graphene and carbon nano tube structures and enables the hybrid composite to have favorable electric conduction and heat conduction properties. The method can be widely used in the fields such as aviation, transportation and communication, electronic industry, civil facilities, construction, chemical industry and the like, can be produced in the industrial scale, and has the advantages of low cost and environmental friendliness.

The invention discloses a high-heat-conductivity composite material and a preparation method thereof. The preparation method comprises the following steps: evenly mixing fibrous heat-conduction filler and high-heat-conductivity filler graphene in a mass ratio of 1:1-1:200 with thermoplastic polymer, dispersing for 0.5-24 hours, granulating to obtain high-heat-conductivity composite grains, and putting the grains in a die to carry out hot molding at 170-280 DEG C under the pressure of 10-18 MPa. The thermoplastic polymer is any one of polyethylene, polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, polyperfluoroalkoxy ester, nylon, polymethyl methacrylate, polycarbonate and polyvinyl chloride. The fibrous heat-conduction filler is carbon fiber or carbon nanotube, and the high-heat-conductivity filler accounts for 5-35 wt% of the high-heat-conductivity composite material. The high-heat-conductivity composite material has the advantages of excellent heat-conduction property, low consumption of heat-conduction filler, favorable mechanical properties, simple preparation technique and low cost.

This invention relates to a preparation technology for producing special products with plastic substances characterizing in mixing an adhesive agent, strengthened fibers, a regulator for friction performance and inorganic fillers in good match to process the surfaces of them with an anti-high temperature coupler to be hot-pressed to a format to get a high performance car brake plate of environmental protection, which replaces that made of asbestos fiber and overcomes the shortcoming of declining at high temperature of the asbestos car brake plates.

The invention discloses a method for preparing a graphene-like two-dimensional laminar titanium carbide nanoplate. The method comprises the following steps: preparing Ti3AlC2 powder by an in-situ hot-pressing solid-liquid reaction; preparing two-dimensional titanium carbide by a chemical liquid phase reaction; performing vacuum calcination post-treatment, and the like. The method can be used for preparing a Ti3AlC2 precursor with excellent crystallinity and high purity under simple process flow, stable process parameters, controllable process, high efficiency, low cost, short time and low pressure; the information that the transverse size of the two dimensional Ti3AlC2 nanoplate prepared by the method can be 5-10 microns, the average thickness of a single layer is about 10-20 nanometers can be found from an SEM picture, the inter-laminar spacing is remarkably enlarged after calcination treatment, and the laminar surface is regular and smooth.

A spun-bonded nonwoven fabric constituted of a web of continuous filaments of thermoplastic synthetic fibers, the structure of which fabric is set by a pattern composed of areas which are produced by partially fusing the fibers by hot pressing and pierce through the fabric and concavely and convexly embossed patterns on the surfaces of the fabric which patterns are composed of high-density concave and convex areas of unbonded fibers respectively and the bulkiness of which fabric is 100 to 400 % in terms of the ratio of the thickness of the fabric inclusive of the convexly embossed pattern surface to the thickness of the low-density areas of the fabric. The application of a hydrophilic agent to the nonwoven fabric gives sanitary supplies such as disposable diaper.

A method for producing the plywood with the wood plys whose one surface is coated by resin includes such steps as sawing log short, boiling in water, removing bark, spinning cutting, cutting fly, drying, ageing, coating resin on one surface of each ply, ageing, laminating, pre-pressing, trimming, hot pressing, trimming, sawing edge, sticking a paper immersed in resin, and classifying.

The invention relates to polyurethane resin superfiber leather and a manufacturing method thereof, belonging to the technical field of manufacturing methods. The manufacturing method is characterized by comprising the steps of sea-island fiber, non-woven fabrics, polyvinyl alcohol impregnation or hot-pressing and ironing out, original cloth processing, impregnation and coating of polyurethane, thermal coagulation, reduction amount of base, basic cloth, dyeing or embossment of grinding surfaces and inspection and warehousing. The polyurethane resin superfiber leather can be obtained by using the method. Compared with solvent type polyurethane, the waterborne polyurethane resin superfiber leather has equivalent physical properties, accords with application requirement, uses the environment-friendly polyurethane resin and has no organic solvent harmful to the environment; a DMF reclamation step is required by solvent type products in the production process so as to simplify the production process; and the polyurethane resin superfiber leather is energy-saving and environment-friendly, meets the limiting requirement on an environment-friendly polyurethane synthetic leather at abroad, reduces the demand quantity of producers, the harm to the producers as well as the production cost and has strong market competitiveness.

A method of manufacturing a light-emitting device includes a hole forming process for forming a through-hole that continues from a front surface to a back surface of a mounting substrate, a pattern forming process for continuously forming a circuit pattern on an inner surface of the through-hole in the mounting substrate, from an end portion of the through-hole on the front surface of the mounting substrate to a mounting portion of a light-emitting element, and on a periphery of the through-hole on the back surface of the mounting substrate, a mounting process for mounting the light-emitting element on the mounting portion, and a hot pressing process in that an inorganic material softened by heating is placed on the surface of the mounting substrate and is advanced into the through-hole while sealing the light-emitting element by pressing and bonding the inorganic material to the surface of the mounting substrate.

A steel sheet for forming having low-temperature heat treatment property, in which heat treatment is performed within a range of lower temperature than a conventional steel sheet in the event of hot press forming or post-heat treatment after cold forming, a method of manufacturing the same, and a method of manufacturing parts using the same. The steel sheet has a composition of, by weight, carbon (C): 0.15 to 0.35%, silicon (Si): 0.5% or less, manganese (Mn): 1.5 to 2.2%, phosphorus (P): 0.025% or less, sulfur (S): 0.01% or less, aluminum (Al): 0.01 to 0.05%, nitrogen (N): 50 to 200 ppm, titanium (Ti): 0.005 to 0.05%, tungsten (W): 0.005 to 0.1%, and boron (B): 1 to 50 ppm, wherein Ti / N: less than 3.4, where Ti / N is the atomic ratio of the corresponding elements, Ceq expressed by the following formula ranges from 0.48 to 0.58, and temperature Ar3 ranges from 670° C. to 725° C. Wherein Ceq=C+Si / 24+Mn / 6+Ni / 40+Cr / 5+V / 14 where C, Si, Mn, Ni, Cr and V indicate the contents (wt %) of the respective elements.

The invention belongs to the technical field of design, research and development of environment-friendly chemical materials and specifically relates to an aldehyde-free vegetable protein-based wood adhesive as well as preparation and application methods thereof. The aldehyde-free vegetable protein-based wood adhesive is prepared from the following components in parts by mass: 100 parts of water, 20-40 parts of vegetable protein, 0.1-5 parts of modifier, 20-40 parts of cross-linking agent, 2-20 parts of curing agent, 1-5 parts of packing and 0-3 parts of additive. The finished product is formed by virtue of vegetation protein dissolution, a cross-linking reaction and a curing reaction. The adhesive is mainly applied to a wood material in such a manner of roll coating, scraper coating, curtain coating or spraying, and then a composite wood artificial board can be obtained by virtue of aging, cold pressing and hot pressing.

The invention discloses a flame-retardant and antistatic wood-plastic composite material and a preparation method thereof and relates to a wood-plastic composite material and a preparation method thereof. The invention aims at solving the problems of relatively poor flame retardance and relatively high cost of the existing antistatic wood-plastic composite material. The wood-plastic composite material is prepared from the following components in parts by weight: a lignocellulosic material, thermoplastic, a lubricant, an antistatic agent, a flame retardant, a coupling agent and an inorganic filler. The method comprises the following steps: 1) performing hot mixing on the lignocellulosic material, the thermoplastic and the lubricant to obtain a hot-mixed material; 2) putting the hot-mixed material into a cold mixing machine for cold mixing, and adding the weighed antistatic agent, the flame retardant, the coupling agent and the inorganic filler into the cold mixing machine for re-mixing when the temperature is lowered to 40-60 DEG C to obtain a premix; 3) putting the premix into a twin-screw extruder to perform melting, mixing and granulation; and 4) performing extrusion molding or thermoforming to prepare the flame-retardant and antistatic wood-plastic composite material. The flame-retardant and antistatic wood-plastic composite material is used in the fields of indoor buildings, decorations, decoration materials and the like.

The invention provides a method for preparing a polymer superhydrophobic surface by using nano-particles for assisting micromolding. The method firstly uses a PDMS as a raw material for copying a micro-structure on the surface of a fresh lotus leaf to be used as a soft template, then casts or hot presses the modified nano particles and a polymer on the surface of the PDMS soft template and strips after molding, thereby obtaining the polymer superhydrophobic surface which contains a micro / nano second-order structure on the surface and has a certain function. The method has simple operation process, high efficiency and good controllability and repeatability; as the obtained surface contains the functional nano-particles, the method not only gives the superhydrophobic property to the polymer surface, but also gives a certain function to the superhydrophobic surface, thereby providing a simple and effective way for preparing the superhydrophobic surface and having wide application value and broad market prospect.

The invention relates to a preparation method for a silicon carbide ceramic tube or rod. An extrusion moulding method is adopted to form a blank body; a normal pressure sintering method is adopted for sintering; and submicron level silicon carbide powder and additives are taken as main raw materials. The preparation method comprises the following steps: 1) carrying out ball milling on the main raw materials by a dry method, adding water, a dispersant, a plasticizer, a lubricant and a liquid state binder, and then carrying out ball milling by a wet method; 2) adopting a spray granulation process to granulate silicon carbide slurry; 3) extruding the blank body by a one-shot direct extrusion moulding method after vacuum pug, corrosion, and vacuum pug; 4) drying the molded blank body by a stage drying mechanism; and 5) placing the blank body of the silicon carbide ceramic tube or rod in a vacuum furnace and carrying out sintering for two times by taking argon gas as protective gas. The high temperature resisting strength and the corrosion resistance of the silicon carbide ceramic tube or rod prepared by the method are both better than those of a reactive sintered product. Compared with a hot press sintering method, the method has lower limit on the product shape and size, and lower cost. The method is suitable for the industrialized production.

A process for upgrading whole crude oil utilizing a recovery fluid, depressurizing an extracted whole crude oil / recovery fluid mixture in a step-wise fashion, and subsequently contacting at least a portion of the whole crude oil with supercritical water fluid to produce high value crude oil having low sulfur, low nitrogen, and low metallic impurities for use as hydrocarbon feedstock.

The invention discloses an aluminum-plastic membrane used for packaging the lithium battery. The aluminum-plastic membrane mainly comprises a protective layer, an aluminum foil layer and a heat sealing layer, wherein the protective layer is bound and combined with the aluminum foil layer through a glue layer, the heat sealing layer is bound and combined with the aluminum foil layer through a glue layer; before the binding and combining, the plasma technology is adopted to perform surface grafting treatment to the surfaces of the protective layer, the aluminum foil layer and the heat sealing layer; and then the protective layer and the aluminum foil layer are separately combined with the both sides of one glue layer through hot-pressing, and the aluminum foil layer and the heat sealing layer are are separately combined with the both sides of one glue layer through hot-pressing. The aluminum-plastic membrane has higher chemical resistance, moisture-proof property, oxygen-isolating property and packaging-binding property, also has explosion-proof property and is suitable for the soft package lithium battery.

The present invention provides a nonwoven fabric for cylindrical bag filter, wherein a long-fiber nonwoven fabric made of a synthetic fiber is used and the long-fiber nonwoven fabric is a long-fiber nonwoven fabric which is made of a thermoplastic continuous filament and is partially thermocompression-bonded. It is preferable that the circular arc flexural rigidity per basis weight is 0.050 to 1.000 ((cN / 2 cm) / (g / m2)) and the air permeation rate per basis weight is 0.010 to 0.500 ((cc / cm2 / sec) / (g / m2)). Further, there is provided a method for producing a nonwoven fabric for cylindrical bag filter including the steps of: melt-extruding a thermoplastic polymer through a spinneret; sucking and drawing the extrudate with an air sucker to form a thermoplastic continuous filament; allowing the filament to be subjected to electrification opening and to be piled on a moving collection surface to form a fiber web; and allowing the fiber web to be subjected to pressure welding treatment with a flat roll and partially thermocompression-bonding the fiber web with hot embossing rolls to form a long-fiber nonwoven fabric.

Disclosed is a process for preparing a TiBw / Ti alloy-based composite material, which relates to a method for the preparation of a titanium alloy-based composite material. The invention provides the method for the preparation of the titanium alloy-based composite material, solving the problems of poor plasticity indexes, complex process and high cost when preparing the titanium alloy-based composite material in the prior art. The titanium alloy-based composite material is prepared according to the following steps of: firstly, mechanical mixing: namely mechanically mixing a TiB2 powder and a titanium alloy powder in weight percent by a ball mill, with the powder mixing time of 4 to 12 hours; and secondly, hot-pressing sintering: the mixed composite powders are put into a vacuumized closed vessel for hot-pressing sintering, the temperature directly rises to 1100 to 1500DEG C from the room temperature by heating, the pressure is maintained at between 15 and 30MPa, the holding time is 0.5 to 5 hours, and the titanium alloy-based composite material can be obtained after cooling the mixture to the room temperature. A matrix used by the method is 180 to 300mu m large particle size titanium alloy powder, and costs are effectively reduced.

The invention relates to a high-molecular composite material having performances of high heat conduction and high flame retardation, the invention is characterized in that the composite material does not contain any halogen or a non environmentally-friendly heavy metal fire retardant, the flame resistance is capable of reaching a UL94 V0 standard, simultaneously, the composite material has good heat conducting performance, the heat conduction coefficient is more than 0.5 W / m. DEG C. The composite material provided in the invention has good injection moulding performance, extruding performance and hot pressing performance. The composite material comprises the following basic components: 1) one or a plurality of metal hydroxides, such as aluminum hydroxide, magnesium hydroxide, zinc hydroxide and the like, wherein the weight content is 10-70%, 2) about 0.2%-60% of the weight content of expandable graphite flaky powder, the lamina size is more than 10 um, and the expandable coefficient is more than or equal to 20 times; 3) 15%-70% of the weight content of matrix resins, such as epoxy resin, organic silicone resin, phenolic resin, thermosetting polyester resin and thermoplastic resins of nylon 6, nylon 66, PBT, PP, HDP and the like. The composite material component of the invention can be directly used for radiators such as LED, electric appliances and electronic components, the heat can be radiated into colder environment so that the operating temperature of the electronic device can be reduced.

The invention provides a method for preparing high dielectric constant polymer-based nano composite material. The method comprises the following steps: performing electrostatic spinning on a polymer matrix solution and simultaneously performing electrostatic spraying on a filler particle suspension; simultaneously receiving the products of the electrostatic spinning and the electrostatic spraying through a common receiving device to obtain a composite fiber membrane; and finally obtaining the high dielectric constant polymer-based nano composite material with filler particles uniformly dispersed after the composite fiber membrane is processed through a hot-pressing processing technique. The composite material prepared by the invention has the characteristics of high dielectric constant, low dielectric loss and the like; and at the same time the dielectric constant of the composite material can be adjusted through adjusting the content of the filler particles in the polymer matrix. The invention has the advantages of simple process, convenient operation and little environment pollution, can well solve the problem that the filler particles is uniformly dispersed in the polymer matrix, and is expected to the microelectronic industry as dielectric material and the like for preparing embedded capacitors.

The invention relates to a powder-based electrode forming method, which comprises the following steps of: uniformly mixing a powder active substance, a powder conductive agent and a powder adhesive through a three-dimensional powder mixer or a zero-gravity powder mixer; crushing through a low-temperature crusher; performing fibrous extrusion forming through a double-screw extruder or an internal mixer / open mill and then achieving target thickness through hot pressing of a calender; and finally performing three-layer compounding with a current collector of a printing conductive adhesive to form an electrode and performing cold rolling to improve the compaction density. According to the powder-based electrode forming method, a method of assisting machining by using a solvent is abandoned, so that the purity of an electrode material is guaranteed to the greatest extent, no energy waste of a drying process or restriction to the time of the drying process exists in a production process, the cost is reduced, the energy loss is reduced, and the working speed is increased.

A process to form a multilayer article comprising pressing a stack comprising two or more panels, wherein each panel comprises a surface layer and a substrate layer, wherein a side of the surface layer is contacted to a side of the substrate layer, and wherein the contacting sides of the surface layer and substrate layer have a fast-setting adhesive disposed there between; and wherein pressing comprises applying uniform pressure to the stack orthogonal to the plane of the panels, at ambient temperature and for a time of 0.1 to 20 minutes, and with no subsequent hot pressing. Articles prepared using the method are also disclosed.

The invention discloses a preparation method of a carbon nano tube-reinforced aluminum base composite material. The preparation method comprises the following steps: (1), uniformly dispersing carbon nano tubes into a dispersant which has chemical inertness on pure aluminum powder or aluminum alloy powder to obtain carbon nano tube dispersion liquid; (2), uniformly mixing the carbon nano tube dispersion liquid with the pure aluminum powder or the aluminum alloy powder, and drying to remove the dispersant to obtain a material mixture; (3), carrying out ball-milling onto the material mixture under protection of inert gases; and (4), carrying out cold pressing, normal-pressure sintering, hot-pressing and densifying under an atmospheric environment and hot-extrusion forming onto the ball-milled material mixture in sequence to obtain the carbon nano tube-reinforced aluminum base composite material. The preparation method disclosed by the invention further can reinforce the aluminum base body by utilizing co-action of base body processing and hardening, crystalline grain fining and reinforcing while bringing the excellent mechanical performances of the carbon nano tubes into play to reinforce the aluminum base body, so that tensile strength and wear resistance of the composite material are greatly improved; moreover, the carbon nano tube-reinforced aluminum base composite material with excellent performances can be industrially produced on a large scale.

The invention discloses a method for producing a flame-retardant veneer plywood, which comprises the following steps: placing wood veneers into a flame retardant aqueous solution to perform dipping treatment, applying the mixed adhesive to the upper surfaces and the lower surfaces of the veneers after the veneers are dried, assembling the veneers into a plate blank according to the principle that odd layers are crossed and symmetrical with even layers, and then performing the processes of cold pressing, hot pressing, cutting edge, sanding, surface treating and the like to obtain the flame-retardant veneer plywood product the thickness of which is between 2.7 and 20 millimeters. The flame retardant in the method is a mixture of low ammonium polyphosphate, ammonium phosphate, ammonium pyrophosphate, urea phosphate, boric acid and pentaerythritol, and the mixed adhesive is a uniform mixture of wood adhesive, filler, and a curing agent. The flame-retardant decorative veneer plywood prepared by the method has the advantages of excellent flame-retardant and fireproof performance, environmental prevention performance, and good mechanical properties.

The present invention discloses a hot-pressing carbonization strengthening method of timbers, which includes drying, planing, hot-pressing carbonization, cooling and other steps. The present invention applies a hot press as a timber-carbonizing device, and the timbers under the state of compression are processed by hot-pressing carbonization. The present invention is characterized in that the investment on carbonization devices is less, the carbonization process is simple, the production is safe, the production efficiency is high, the consumption of heat energy is little, and the production cost is low; moreover, the thickness of the carbonized timbers is not limited, the defects of the timbers, such as deformation, cracking, stiker stain, color difference, knot fall-off, etc., do not occur in the process of production, so the quality of products is high; not only is the size stability and noncorrodibility of the carbonized timbers improved, but also the density and mechanical property of the timbers is increased.